Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. GPT-4vsOpenAI o4-mini
Updated Apr 2025

GPT-4vsOpenAI o4-mini

OpenAI o4-mini is cheaper than GPT-4 at $1.1/M vs $30/M input tokens.

GPT-4 and OpenAI o4-mini compared across 26 shared prompts
SpecGPT-4OpenAI o4-mini
Input price$30/M tokens$1.1/M tokens
Output price$60/M tokens$4.4/M tokens
Context window8K tokens—
ParametersNot disclosedNot disclosed
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedMay 2023Apr 2025
Our Verdict
GPT-4
GPT-4
OpenAI o4-mini
OpenAI o4-mini

Not enough votes to call it. On the specs, nothing separates them.

OpenAI o4-mini costs 14x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-4
Input
$30.00
Output
$60.00
OpenAI o4-mini
Input
$1.10
27× cheaper
Output
$4.40
14× cheaper

OpenAI o4-mini is cheaper on both: 27× input, 14× output.

Where to run it

3 hosts

GPT-42 hosts
HostInOutContextUptime
Azure AI Foundry$30.00 in·$60.00 out·8k·100% upOpenAI$30.00 in·$60.00 out·8k·100% up
OpenAI o4-mini1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 27 Sep 2026.

Writing DNA

Style Comparison

Similarity
48%

GPT-4 uses 82.3x more bold

GPT-4
OpenAI o4-mini
59%Vocabulary73%
18wSentence Length21w
1.10Hedging0.39
0.8Bold0.0
2.5Lists2.0
0.00Emoji0.00
0.00Headings0.00
0.45Transitions0.05
Based on 15 + 17 text responses
Research

What we learned reading every model

FAQ

Common questions

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 26 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-4 and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 26 challenges so you can judge which fits your needs best.

GPT-4 costs $30/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. OpenAI o4-mini is $28.90/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of GPT-4 and OpenAI o4-mini across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Keep exploring

More comparisons

Against the newest arrivals

GPT-4 logoSolar Mini 4 logo
GPT-4 vs Solar Mini 4Landed Sep 2026
OpenAI o4-mini logoQwen3.8 Max Prime logo
OpenAI o4-mini vs Qwen3.8 Max PrimeLanded Sep 2026
GPT-4 logoGLM 5.3 Prime logo
GPT-4 vs GLM 5.3 PrimeLanded Sep 2026
OpenAI o4-mini logoQwen3.8 Omni Flash logo
OpenAI o4-mini vs Qwen3.8 Omni FlashLanded Sep 2026
GPT-4 logoCommand A+ logo
GPT-4 vs Command A+Landed Sep 2026
OpenAI o4-mini logoClaude Opus 5.5 logo
OpenAI o4-mini vs Claude Opus 5.5Landed Sep 2026
GPT-4 logoGPT-6 Luna Pro logo
GPT-4 vs GPT-6 Luna ProLanded Sep 2026
OpenAI o4-mini logoGPT-6 Sol Pro logo
OpenAI o4-mini vs GPT-6 Sol ProLanded Sep 2026

Same lab, same size, long tail

GPT-4 logoGPT-4o (Omni) logo
GPT-4 vs GPT-4o (Omni)Version compare
GPT-4 logoGPT-6 Sol Pro logo
GPT-4 vs GPT-6 Sol ProSame lab
OpenAI o4-mini logoOpenAI o3 logo
OpenAI o4-mini vs OpenAI o3Version compare
OpenAI o4-mini logoGPT-6 Luna Pro logo
OpenAI o4-mini vs GPT-6 Luna ProSame lab
GPT-4 logoSeed 2.0 Lite logo
GPT-4 vs Seed 2.0 LiteNew provider
GPT-4 logoSeed 2.1 Turbo logo
GPT-4 vs Seed 2.1 TurboNew provider
GPT-4 logoSolar Pro 4 logo
GPT-4 vs Solar Pro 4New provider
GPT-4 logoTernary Bonsai 2 27B logo
GPT-4 vs Ternary Bonsai 2 27BNew provider

Model pages

GPT-4 logo
GPT-426 outputs, specs and price
OpenAI o4-mini logo
OpenAI o4-mini59 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed